The time I was estimating was for the installation of the graphics only, by one fitter.
I realise you were doing this all on your own, mate. And you have combined the manufacturing, prepping of the graphics, stripping and installing the graphics, all within your tracked time of 11 hours.
So when you remove the manufacturing process from your time, split it and allocate the graphics installation to another person. The 8-hour shift should be more than achievable to complete the installation. Keep in mind the first van is always the slowest etc.
If you are doing a fleet of vehicles, it is important that you have a fixed process in place and that anyone involved is following it.
When manufacturing, you only need to be 1.5 vans ahead of the installer, but if you gain a lead of say two vans being ready, and whilst machines are running the other person can then be helping with the installation. By that, I don’t mean the graphics, but stripping the parts off the vehicle, cleaning, and parking where the graphics should go.
When the vans are being stripped, keep all the parts in a box or a bin bag or something. it is so easy to lose a screw or a clip etc.
Also, take before and after pictures of a part you are removing, or a short phone video of the person removing it. it helps if you need to reinstall something and you are unsure how something went.
Also, it is very important to take photos of registration plates, followed by a video walk around of the vehicle pointing out any scratches, dings, loose mirrors, missing badges etc literally anything that can be seen as an imperfection. done like this, showing the registration etc. then filing it till you are paid at minimum. because you don’t want them coming back to you with a complaint further down the line.
it happens, I have the t-shirt and it’s not a good position to be in when someone is blaming you for something you haven’t done.